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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Mitral valve replacement ： ウィキペディア英語版 Mitral valve replacement Mitral valve replacement is a cardiac surgical procedure in which a patient’s diseased mitral valve is replaced by either a mechanical or bioprosthetic valve. Mitral valve replacement is performed when the valve becomes too tight (mitral valve stenosis) for blood to flow into the left ventricle, or too loose (mitral valve regurgitation) in which case blood can leak back into the left atrium and thereby back into the lung.〔(【引用サイトリンク】url=http://www.debakeydepartmentofsurgery.org/home/content.cfm?proc_name=mitral+valve+repair+replacement&content_id=274 )〕 Mitral valve disease can occur from infection, calcification,〔Bertazzo, S. ''et al.'' Nano-analytical electron microscopy reveals fundamental insights into human cardiovascular tissue calcification. ''Nature Materials'' 12, 576-583 (2013).〕〔Miller, J. D. Cardiovascular calcification: Orbicular origins. ''Nature Materials'' 12, 476-478 (2013).〕 inherited collagen disease, or other causes.〔(【引用サイトリンク】url=http://www.lahey.org/Departments_and_Locations/Departments/Heart_and_Vascular_Center/Valvular_Heart_Disease.aspx?_vsignck&_vsrefdom=vascular2 )〕 Since a mitral valve replacement is an open heart surgical procedure, it requires placing the patient on cardiopulmonary bypass.〔 ==Options== Many mitral valves can be repaired instead of replaced, especially for minimally damaged valves.〔 Advantages to valve repair instead of replacement include lower surgical mortality (1-2% for repair versus 6-8% for replacement), lower risk of stroke, lower rate of endocardial infection, and improved long-term survival. Patients who receive a valve repair stay on the same survival curve as the normal population. After mitral valve repair, blood thinners are not required; however, lifelong maintenance on blood thinners is required after mechanical mitral valve replacement.〔(【引用サイトリンク】url=http://www.umm.edu/heart/mitral_repla.htm )〕 Mitral valve surgery can now also be performed robotically although the procedure may take longer. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mitral valve replacement」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.